|
time plot : 34 phrases in 13 subjects |
| Astronautics | 1 |
| Automated equipment | 3 |
| Aviation | 2 |
| Geophysics | 2 |
| Intelligence and security services | 1 |
| Makarov | 1 |
| Mathematics | 1 |
| Metallurgy | 4 |
| Non-destructive testing | 1 |
| Oilfields | 2 |
| Sakhalin | 1 |
| Seismology | 9 |
| Technology | 6 |